New possibilities for the implementation of hydraulics for mobile machines

Bosch Rexroth Africa company Hytec South Africa is expanding its range of electronic Open Circuit- (eOC-) capable pumps by introducing the new A10VO/60 axial piston pump. The pump is designed for medium-pressure applications with nominal pressures up to 280 bar, with 320 bar maximum pressure.

Hytec SA says its eOC architecture shifts the complexity of a hydromechanical pump control to the BODAS eOC pump control software. To allow this interaction, the axial piston pump is equipped with sensors for the swivel angle and pressure. This means that the control is no longer limited to mechanically fixed control variables such as torque, pressure or flow rate. Instead, the control strategy can switch to the optimum control variable depending on the work situation. This helps to make machines more versatile and flexible, increasing productivity and reducing energy consumption.

The company notes that the A10VO/60 is its first axial piston variable pump that can be equipped with an integrated pre-compression volume as standard. This option aims to reduce pressure pulsation by up to 50%, with a consequent reduction in noise levels in the operator's cab. This improvement in operating comfort can be achieved without additional, cost-intensive noise reduction measures such as engine compartment insulation, system damping or cabin insulation.

The power density of the new unit has increased by up to 49%. An increase in pressure to 280 bar combined with an optimised pump design is said to result in an installation length that is up to 10% shorter. This means that the installation space required is significantly less compared to other medium-pressure pumps. The reworked rotary group allows for high efficiency levels in both the partial and full load range. The A10 rotary groups have been re-engineered for increased efficiency, providing more hydraulic power while maintaining diesel engine performance and reducing operating costs.

With its reduced variance, the eOC version of the new pump is said to enable cost savings as the different controller types and mechanical settings are transferred to the software. The reduced pump variance means stock levels can be reduced, minimising management of spare parts and aftermarket components. If servicing is required or if feature updates are available, the software can be managed via the BODAS service interface. Hytec SA also offers the A10VO series 60 in a version with classic pressure-flow control.